Binder-frame.



PATENTE'D MAR. a, 1904.

L. A. JONES.

BINDER FRAME.

APPLICATION FILED nmnm, 190;.

2 SHEETSBHEET 1.

N0 MODEL.

Wm JUL n3 w. ha m witrbesscswAsu No. 754,070. PATENTED MAR. s, 1004.

' L. A. JONES.

BINDER FRAME.

APPLICATION FILED JUNE 24, 1903. N0 MODEL. 2 SHEETS-SHEET 2 ZZZ-167105 se s fizver 276 p7" UNITED STATES iatented March 8, 1904.

PATENT ()EEIcE.

LOUIS A. JONES, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO FLOR- ENCENIGHTINGALE TAIT, OF MELROSE, MASSACHUSETTS.

BINDER-FRAME.

SPECIFICATION forming part of Letters Patent N 0. 754,070, dated. March8, 1904;.

Application filed June 24, 1903. Serial No. 162,869. (No model.)

To all whom it nmy concern:

Be it known that I, LOUIS A. J ONES, a citizen of the United States,residing at Cambridge, in the county of Middlesex and State ofMassachusetts, have invented new and useful Improvements inBinder-Frames, of which the accordance with my invention, together witha portion of two cover-sections, the same being shown open. Fig. 2 is atransverse section taken on line 2 2 of Fig. 1. Fig. 3 is a transversesection taken on line 3 3 of Fig. 1. Fig. 4 is an end elevation.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, 5 is a back-plate.

6 and 7 are cover-plates to which the covers 8 and 9, respectively, arefastened. The cover-plates 6 and 7 extend throughout the entire lengthof the back-plate 5 and are provided with end flanges 1O 10 and 11 11,respectively. Said cover-plates are preferably L- shaped incross-section and are constructed to slide laterally upon saidback-plate 5, being guided in ways provided by plates 12 12, fast to theinside and at opposite ends of the back-plate 5. The guide-plates 12 arefastened to the back-plate 5 adjacent to the inner faces of the endflanges 10 10 and 11 11, thus preventing longitudinal movement of thecoverplates 6 and 7.

The cover-plates 6 and 7 are moved simultaneously toward or away fromeach other by links 13 13 and 14 14. The links 13 13 are pivotallyconnected at their outer ends to the cover-plate 6, and the links 14 14at their outer ends are pivotally connected to the coverplate 7. Onepair of links 13 14 is pivotally connected at 15 to a slide 16, saidslide being constructed to slide in ways 17 18, integral with theback-plate 5. The inner ends of the other'pair of links 13 14 arepivoted at 19 to a slide 20, guided in ways 21 22, integral with theback-plate 5.

The slides 16 and have rack-teeth 23 and 24, respectively, cut thereinand meshing into a pinion 25, journaled to rotate upon a stud 26, fastto the back-plate 5. The pinion 25 is rotated by a worm-gear 27, fast toa rod 28, journaled to rotate in bearings 29 and 30, integral with theback-plate 5. The rod 28 is guarded against longitudinal movement bycollars 31 31, fast thereto, and is provided with a square end 32, whichfits a key 33, by means of which the rod 28 and worm-gear 27 arerotated, thus rotating the pinion 25 and imparting a simultaneouslongitudinal movement to the rack-slides l6 and 20 in oppositedirections. As thesaid slides 16 and 20 are moved, as hereinbeforedescribed, longitudinally of the back-plate 5 simultaneously in oppositedirections the links 13 and 14 and 13 14 will move the cover-plates 6and 7 toward or away from each other.

The cover-plates 6 and 7 are provided with .posts 34 34, fast theretoand projecting into tubes 35 35, and to these tubes and posts the leavesof the ledger (not-shown) are attached. As the cover-plates 6and 7 aremoved toward or away from each other, as hereinbefore described, theposts 34 34 slide in the tubes 35 35. It will thus be seen that byrotating the rod 28 by means of the key33 the distance between the twocover-plates 6 and 7 and between the covers 8 and 9 will be increased ordiminished, as may be desired, to accommodate and hold firmly boundtogether varying numbers of leaves. It will also be seen that when thecover-plates have been adjusted to the desired distance one from theother in the manner hereinbefore set forth said coverplates will belocked against displacement by the worm-gear 27, which prevents thepinion 25 from being rotated by longitudinal pressure upon therack-slides 16 and 20.

Having thus described my invention, what I claim, and desire by LettersPatent to secure, 1s

1. A binder-frame comprising a back-plate, cover plates constructed toslide laterally thereon, two racks constructed to slide longitudinallyof said back-plate, links pivotally connected at opposite ends thereof,respectively, to said cover-plates and to said racks, and a pinionmeshing at opposite sides thereof into said racks.

2. A binder-frame comprising aback-plate, cover plates constructed toslide laterally thereon, two racks constructed to slide longitudinallyof said back plate, links pivotally connected at opposite ends thereof,respectively, to said cover-plates and to said racks, a pinion meshingat opposite sides thereof into said racks, and means to rotate saidpinion from one end of said back-plate.

3. A binder-frame comprising a back-plate, cover plates constructed toslide laterally thereon, two racks constructed to slide longitudinallyof said back plate, links pivotally connected at opposite ends thereof,respectively, to said cover-plates and to said racks, a pinion meshingat opposite sides thereof into said racks, and a worm-gear meshing intosaid pinion.

4. Abinder-frame comprising a back-plate, cover plates constructed toslide laterally thereon, two racks constructed to slide longitudinallyof said backplate, links pivotally connected at opposite ends thereof,respectively, to said cover-plates and to said racks, a pinion meshingat opposite sides thereof into said racks, a rotatable rod extendinglongitudinally of said back plate, and a wormgear fastto said rod andmeshing into said pinion.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

LOUIS A. JONES.

